| APA | HHFH. (2012, February 16). In Acronym Geek. Retrieved 14:23, February 16, 2012, from http://www.acronymgeek.com/HHFH |
| MLA | "HHFH." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HHFH>. |
| MHRA | 'HHFH', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HHFH> [accessed 16 February 2012] |
| Chicago | "HHFH", http://www.acronymgeek.com/HHFH (accessed February 16, 2012). |
| CBE/CSE | HHFH [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HHFH. |
| Bluebook | HHFH, http://www.acronymgeek.com/HHFH (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHFH, http://www.acronymgeek.com/HHFH (optional description here) (as of Feb. 16, 2012, 14:23). |
| AMA | HHFH. Acronym Geek. February 16, 2012, 14:23. Available at: http://www.acronymgeek.com/HHFH. Accessed February 16, 2012, 14:23. |